agenttesla | 5a18ef3e027b211901758fa2ffeaa63ae1ab87cdd85188660ab839771abb9ecb

General

Target

RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js
Size

466KB
MD5

83ef3f626544cef2f0962863ab109634
SHA1

48d5a062ea59ea06afc5334a43f2537390660538
SHA256

5a18ef3e027b211901758fa2ffeaa63ae1ab87cdd85188660ab839771abb9ecb
SHA512

d9f127a33cb2a42b610e3f0e7ad057233e9491a37fc8342f92b216e6f1a3a470e26487bab74cb40209d5c084429db78152ed7266aaa1b56633aa0c6239c591e9

Score

10^/10

agenttesla wshrat keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.zolvtek.com/
Port:
21
Username:
[email protected]
Password:
bird0006

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat

WSHRAT Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0008000000000687-3.dat	family_wshrat
behavioral2/files/0x000200000001ab59-4.dat	family_wshrat

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000200000001ab5a-6.dat	family_agenttesla
behavioral2/files/0x000200000001ab5a-7.dat	family_agenttesla

Blocklisted process makes network request 7 IoCs

flow	pid	Process
5	3656	wscript.exe
7	3656	wscript.exe
14	3656	wscript.exe
15	3656	wscript.exe
17	3656	wscript.exe
18	3656	wscript.exe
19	3656	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	234.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js	wscript.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 9 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\File Transfer Protocol = "C:\\Users\\Admin\\AppData\\Roaming\\File Transfer Protocol\\File Transfer Protocol.exe"	234.exe
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\software\microsoft\windows\currentversion\run	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js\""	wscript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3000	234.exe
3000	234.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3000	234.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 3656	1048	wscript.exe	75
PID 1048 wrote to memory of 3656	1048	wscript.exe	75
PID 3656 wrote to memory of 3000	3656	wscript.exe	76
PID 3656 wrote to memory of 3000	3656	wscript.exe	76
PID 3656 wrote to memory of 3000	3656	wscript.exe	76

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\RE_BOEING3A78_NEW_ORDERS_E4G60K1G7_PDF.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3656
- - C:\Users\Admin\AppData\Roaming\234.exe
    "C:\Users\Admin\AppData\Roaming\234.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3000-8-0x0000000003130000-0x0000000003131000-memory.dmp

Filesize
4KB

Download
memory/3000-9-0x0000000003131000-0x0000000003132000-memory.dmp

Filesize
4KB

Download
memory/3000-10-0x0000000003132000-0x0000000003133000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing